CN102208990B - Speech quality analysis method and device - Google Patents

Abstract

The invention discloses a voice quality analysis method. The method comprises the following steps of: obtaining bearing information of a to-be-analyzed call, wherein the to-be-analyzed call has a specified feature; obtaining a voice data packet of the to-be-analyzed call according to the bearing information; and analyzing the voice quality of the voice packet. The invention further discloses a voice quality analysis device. The data can be filtered without capturing all network data; the processed data volume is greatly reduced, thereby effectively reducing the work load of the voice quality analysis and improving the voice quality analysis efficiency.

Description

Speech quality analysis method and device

technical field

The invention relates to the technical field of communication, in particular to a voice quality analysis method and device.

Background technique

Under the application of NGN (Next Generation Network, next-generation network)/IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) networking, SIP (Session initiation protocol, session initiation protocol) for IP (Internet Protocol, Internet Protocol) calls /BICC (Bearer Independent Call Control protocol, call hold protocol) has been widely used. The voice stream of the call is carried on the IP network. Due to the openness of the IP network, voice quality problems will inevitably occur in the calls carried on the IP network. Therefore, the monitoring of the voice quality has become a routine network maintenance work. It becomes a difficult problem to analyze the voice quality of calls with certain characteristics.

In the NGN/IMS networking network, the commonly used voice quality analysis method is: deploy a device equipped with a network data packet capture tool in the bearer network, and mirror all network data of the network switch to the device; The signaling message of the call with the specified characteristics filters the IP data packet to obtain the voice data packet of the call.

In the process of realizing the present invention, the inventor found that the above-mentioned prior art has the following deficiencies:

In the prior art, the workload of voice quality analysis is very large, and the working efficiency of voice quality analysis is low.

Contents of the invention

An embodiment of the present invention provides a voice quality analysis method to reduce the workload of voice quality analysis and improve the efficiency of voice quality analysis. The method includes:

Obtaining bearer information of the call to be analyzed, the call to be analyzed has specified characteristics, and the bearer information includes information related to bearer control of the call to be analyzed;

Obtain the voice data packet of the call to be analyzed according to the bearer information;

Performing voice quality analysis on the voice data packet; wherein, obtaining the voice data packet of the call to be analyzed according to the bearer information includes: sending mirror information to an IP bearer device according to the bearer information, and the mirror information includes the The source IP address of the voice data packet, the port number and the destination IP address of the mirror image data; receiving the mirror image data of the voice data packet returned by the IP bearer device according to the mirror image information; performing voice quality analysis on the voice data packet, The method includes: analyzing the voice quality of the image data.

The embodiment of the present invention also provides a voice quality analysis device, which is used to reduce the workload of voice quality analysis and improve the efficiency of voice quality analysis. The device includes:

A first obtaining module, configured to obtain bearer information of the call to be analyzed, the call to be analyzed has specified characteristics, and the bearer information includes information related to bearer control of the call to be analyzed;

A second obtaining module, configured to obtain the voice data packet of the call to be analyzed according to the bearer information;

An analysis module, configured to analyze the voice quality of the voice data packet;

Wherein, the second obtaining module includes: a sending unit, configured to send mirror information to the IP bearer device according to the bearer information, and the mirror information includes the source IP address, port number and destination of the mirror data of the voice data packet IP address; a first receiving unit, configured to receive the mirror data of the voice data packet returned by the IP bearer device according to the mirror information; the analysis module is specifically used to: analyze the voice quality of the mirror data.

In the embodiment of the present invention, the bearer information of the call to be analyzed with specified characteristics is obtained first, and then the voice data packet of the call to be analyzed is obtained according to the bearer information, and the voice quality analysis is performed on the voice data packet, so it is not necessary to After capturing all the network data and then performing data filtering, the amount of processed data is greatly reduced, thereby effectively reducing the workload of voice quality analysis and improving the efficiency of voice quality analysis.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort. In the attached picture:

Fig. 1 is the processing flowchart of speech quality analysis method in the embodiment of the present invention;

Fig. 2 is the schematic diagram of a specific example of speech quality analysis in the embodiment of the present invention;

FIG. 3 is a schematic diagram of another specific example of speech quality analysis in an embodiment of the present invention;

4 is a schematic structural diagram of a voice quality analysis device in an embodiment of the present invention;

5 is a schematic structural diagram of a voice quality analysis device in an embodiment of the present invention;

6 is a schematic structural diagram of a voice quality analysis device in an embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a specific example of a voice quality analysis device in an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

As shown in Figure 1, in the embodiment of the present invention, the processing flow of the voice quality analysis method may include:

Step 101. Obtain the bearer information of the call to be analyzed with specified characteristics;

Step 102, according to the bearer information, obtain the voice data packet of the call to be analyzed;

Step 103, analyzing the voice quality of the voice data packet.

As can be seen from the process shown in Figure 1, in the embodiment of the present invention, the bearer information of the call to be analyzed with specified characteristics is obtained first, and then the voice data packet of the call to be analyzed is obtained according to the bearer information, and the voice quality analysis is performed on the voice data packet , so it is not necessary to perform data filtering after capturing all network data, and the amount of processed data is greatly reduced, thereby effectively reducing the workload of voice quality analysis and improving the efficiency of voice quality analysis. The embodiment of the present invention realizes call-level voice packet capture and voice quality analysis in an IP network, and can realize voice stream analysis based on some related information of the call, including the specified features of the call and the bearer information of the call, instead of Network-level speech analysis in the state of the art.

The process shown in Figure 1 can be implemented by a device that can realize its functions, for example, the device can be a Media Gateway Controller (MGC), of course, the device can also be other independent devices, or it can be embedded in the media gateway A device of some sort. Since the media gateway controller itself already has signaling analysis capabilities, it is more convenient to realize the device as a media gateway controller during implementation.

For example, when the device is a media gateway controller, step 101 may be specifically implemented as: performing feature analysis on all calls in the call establishment process, determining calls with specified features, and obtaining bearer information of the calls. As another example, when the device is a device independent of the media gateway controller, the signaling analysis capability of the media gateway controller can still be used to implement step 101, that is: the device provides the media gateway controller with the above-mentioned specified features; The gateway controller analyzes the characteristics of all calls in the call establishment process, determines the call with the above-mentioned specified characteristics, and obtains the bearer information of the call; the device then receives the bearer of the call with the above-mentioned specified characteristics sent by the media gateway controller information.

To give a specific example, in this example, the device for implementing the process shown in FIG. 1 is independent of the media gateway controller. For convenience of description, it may be called a voice quality analysis device. The user initiates voice quality analysis on calls with certain specified characteristics through the voice quality analysis device; the media gateway controller analyzes all call signaling in the call establishment process, such as signaling of protocols such as SIP, SIP-I, or BICC , to obtain the bearer information of calls with these specified characteristics. In the implementation, there can be many kinds of specified features, which can be set according to actual needs, for example, it can be calling number, called number or CALL-ID (call identification) and other information. The aforementioned bearer information can include the SDP (Session Description Protocol, Session Description Protocol) information of the caller side and the called side to be analyzed, and the SDP information includes an IP address and a port number; of course, during implementation, the aforementioned bearer information can also include other related information. Information about the bearer control of the call to be analyzed.

During specific implementation, in step 102, according to the bearer information, the voice data packet of the call to be analyzed can be obtained in multiple ways, for example, it can be implemented as: sending mirror information to the IP bearer device according to the above bearer information, and the mirror information includes the source of the voice data packet IP address, port number, and the destination IP address of mirror image data; Receive the mirror image data of the voice data packet that IP bearer equipment returns according to mirror image information; Press this implementation mode, step 103 can be specifically implemented as: carry out voice quality to the mirror image data that receives analyze.

In this embodiment, according to the bearer information of the call to be analyzed with specified characteristics, the mirror image information of the call voice data packet is obtained, and the mirror image information is sent to the IP bearer device, and the IP bearer device can use the source of the voice data packet in the mirror image information The IP address and port number are used to obtain the voice data packet, and according to the mirror data destination IP address of the voice data packet in the mirror information (that is, the destination IP address of the voice quality analysis device), the voice data packet is mirrored to the destination IP address, that is, the aforementioned voice quality Analyzing device, the voice quality analyzing device just can carry out voice quality analysis to the image data of voice data packet.

The foregoing IP bearer device may be of various types, for example, it may be a media gateway (Media Gateway, MGW), a network switching device, and the like. During the implementation, the voice quality analysis device can analyze the message time delay or packet loss and other parameter values of the voice data packets received, and can also convert the voice data packets into voice files in formats such as wav for the voice quality analysis. user experience. Sending the mirroring information to the IP bearer device can be implemented by extending the media gateway control signaling, for example, the H.248 signaling can be extended.

A specific example of voice quality analysis in the embodiment of the present invention is provided below, and its analysis process schematic diagram is as shown in Figure 2, and can include:

Step 201, the user determines the specified feature of the call to be analyzed, for example, the specified feature is the call number or CALL-ID, such as the call number is 888001, and the voice quality analysis device sends the specified feature to the media gateway controller.

Step 202, the media gateway controller analyzes the characteristics of all calls during the call establishment process. After analyzing the calls with the above-mentioned specified characteristics, it sends the bearer information to the voice quality analysis device during the call establishment process. The bearer information includes the caller SDP (Session Description Protocol, Session Description Protocol) information on the called side and the called side, and the SDP information includes the IP addresses and port numbers of the media gateways corresponding to the calling and called respectively.

For example: the media gateway controller includes MGC1 and MGC2, analyzes the signaling of protocols such as SIP, SIP-I, or BICC, and after learning that the calling number is 888001, the calling number of the calling party in the call is 888001, corresponding The IP address and port number of MGW1 are 192.168.1.200:4500, the called number in this call is 888002, and the corresponding IP address and port number of MGW2 are 192.168.3.240:3853.

Step 203, the voice quality analysis device sends mirroring information to corresponding media gateways respectively according to the bearer information, and the mirroring information includes mirroring objects, ie the source IP address and port number of the voice data packet, and the destination IP address of the mirroring data.

For example: the source IP address and the port number of the voice data packet here include: the IP address and the port number of MGW1 and MGW2, the mirror data purpose is the voice quality analysis device, and the source IP address and the port number of the voice data packet sent to MGW1 are 192.168.1.200:4500, the destination IP address of the mirrored data is 192.168.10.244, the source IP address and port number of the voice data packet sent to MGW2 is 192.168.1.200:3853, and the destination IP address of the mirrored data is 192.168.10.244.

Step 204: After receiving the mirroring information, the media gateway sends the interaction data of the mirroring object to the voice quality analysis device.

After receiving the image information, MGW1 and MGW2 respectively send the calling and called interaction data to the voice quality analysis device.

Step 205, the voice quality analysis device analyzes the received voice data packets, obtains the parameter values such as packet delay/packet loss, and converts the voice data packets into voice files in formats such as wav for experience.

In this example, in addition to the signaling analysis capability of the media gateway controller, the voice data transmission capability of the IP bearer equipment is also comprehensively used to realize call-level voice packet capture and voice quality analysis in the IP network.

In another embodiment, obtaining the bearer information in step 101 can also be implemented as: obtaining the bearer information of the caller and called side of the call to be analyzed; in step 102, obtaining the voice data packet of the call to be analyzed according to the bearer information can be implemented as: according to the Analyze the bearer information of the caller and called side of the call, perform media negotiation on the caller and called side of the call to be analyzed; receive the voice data packet sent by the caller and called side of the call to be analyzed. That is, through the media negotiation between the calling and called sides, the voice data packets of the calling and called sides are sent to the voice quality analysis device, so that the voice quality analysis device can perform voice quality analysis. The specific negotiation process may include:

The voice quality analysis device selects local bearer information to form virtual calling side bearer information, replaces the original calling side bearer information, and performs media negotiation with the called side; selects local bearer information to form virtual called side bearer information, and replaces the original called side bearer information. The side bears information and performs media negotiation with the calling side.

After receiving the voice data packet sent by the caller and called side of the call to be analyzed, the voice quality analysis is performed. At this time, a copy of the received voice data packet can also be sent to the opposite end of the call to keep the call processing in a normal conversation state.

As an example, the voice quality analysis process schematic diagram in this example is shown in Figure 3, which may include:

In step 301, the user determines that the specified feature of the call to be analyzed is the calling number (CallerNo) 888001, and the voice quality analysis device provides the specified feature to the media gateway controller.

Step 302, when the user 888001 calls in, the media gateway controller analyzes the calling number (CallerNo), determines that the call is a call to be analyzed, and starts a voice quality analysis process for the call.

Step 303, the media gateway controller sends the calling side bearer information (real IP address and port number of the terminal where user 888001 is located: 192.168.1.200/2544) to the voice quality analysis device;

Step 304, the voice quality analysis device selects a local IP address and port number to form a virtual calling side bearer information (the IP address/port number of the terminal where the virtual user 888001 is located: 192.168.1.244/4330) to send to the media gateway controller ;

Step 305, the media gateway controller replaces the real IP address/port number of the calling side (where the user 888001 is located) with the virtual IP address/port number (the IP address/port number of the terminal where the virtual user 888001 is located: 192.168.1.244/4330) The real IP address and port number of the terminal: 192.168.1.200/2544), media negotiation with the called side;

Step 306: During the negotiation process on the called side, send the bearer information of this section (the real IP address/port number of the terminal where the called user 888002 is located: 192.168.1.201/3372) to the media gateway controller to complete the media negotiation;

Step 307, the media gateway controller sends the called side bearer information (the real IP address/port number of the terminal where the called user 888002 is located: 192.168.1.201/3372) to the voice quality analysis device;

Step 308, the voice quality analysis device selects a local IP address and port number to form a virtual called side bearer information (IP address/port number of the terminal where the virtual called user 888002 is located: 192.168.1.244/5508) and send it to the media gateway controller;

Step 309, the media gateway controller replaces the real IP address/port number of the called side (the IP address/port number of the terminal where the virtual called user 888002 is located: 192.168.1.244/5508) with the virtual IP address/port number (called Call the real IP address/port number of the terminal where user 888002 is located: 192.168.1.201/3372), and conduct media negotiation with the calling side;

Step 310, after the media gateway controller completes the media negotiation of the calling and called sides, the call enters the conversation state, and the voice quality analysis device starts to receive the voice data packets of the calling and called sides one after another, and analyzes the voice quality of the conversation; The received voice data packet is copied and sent to the opposite end, and the call is kept in a normal conversation state.

It can be seen that, in this embodiment, the virtual calling side bearer information is replaced by the original calling side bearer information, and the virtual called side bearer information is replaced by the original called side bearer information to perform media negotiation on the calling and called sides. It can achieve the purpose of sending the voice data packets of the calling party and the called side to the voice quality analysis device, so as to perform voice quality analysis.

Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the program can be executed when the program is executed. , may include all or part of the steps in the methods of the foregoing embodiments, and the storage medium may include: ROM, RAM, magnetic disk, optical disk, and the like.

An embodiment of the present invention also provides a device for analyzing voice quality, as described in the following embodiments. Since the problem-solving principle of the device is similar to that of the voice quality analysis method, the implementation of the device can refer to the implementation of the method, and the repetition will not be repeated.

An embodiment of the present invention provides a voice quality analysis device, the structure of which is shown in Figure 4, and may include:

The first obtaining module 401 is configured to obtain bearer information of the call to be analyzed, and the call to be analyzed has specified characteristics;

The second obtaining module 402 is used to obtain the voice data packet of the call to be analyzed according to the bearer information;

The analysis module 403 is configured to analyze the voice quality of the voice data packets.

In one embodiment, the first obtaining module 401 can be specifically used for:

Analyze the characteristics of all calls in the call establishment process, determine the calls with specified characteristics, and obtain the bearer information of the calls;

Or, provide the specified feature to the media gateway controller; receive the bearer information of the call with the specified feature returned by the media gateway controller.

As shown in FIG. 5, in an embodiment, the second obtaining module 402 may include:

Sending unit 501, for sending mirroring information to IP bearer equipment according to bearer information, mirroring information comprises the source IP address of voice data packet, port number and destination IP address of mirroring data;

The first receiving unit 502 is used to receive the mirror data of the voice data packet returned by the IP bearer device according to the mirror information;

At this time, the analysis module 403 may be specifically configured to: analyze the voice quality of the image data.

In an embodiment, the sending unit 501 can be specifically used to:

By extending the media gateway control signaling, the mirroring information is sent to the IP bearer device.

In one embodiment, the first obtaining module 401 may be specifically configured to: obtain bearer information of the calling party and the called party of the call to be analyzed;

As shown in FIG. 6, the second obtaining module 402 may include:

A negotiation unit 601, configured to perform media negotiation on the caller and called sides of the call to be analyzed according to the bearer information of the caller and called sides of the call to be analyzed;

The second receiving unit 602 is configured to receive the voice data packet sent from the caller and called side of the call to be analyzed.

In one embodiment, the negotiation unit 601 can be specifically used to:

Select the local bearer information to form virtual calling side bearer information, replace the original calling side bearer information, and perform media negotiation with the called side;

The local bearer information is selected to form virtual called-side bearer information, which replaces the original called-side bearer information, and performs media negotiation with the calling side.

As shown in Figure 7, in one embodiment, the voice quality analysis device shown in Figure 6 may also include:

The sending module 701 is configured to send a copy of the received voice data packet to the opposite end of the call after the second receiving unit receives the voice data packet from the caller and the called side of the call to be analyzed.

In the embodiment of the present invention, first obtain the bearer information of the call to be analyzed with specified characteristics, and then obtain the voice data packet of the call to be analyzed according to the bearer information, and perform voice quality analysis on the voice data packet, so it is not necessary to capture all network data After data filtering, the amount of processed data is greatly reduced, thereby effectively reducing the workload of voice quality analysis and improving the efficiency of voice quality analysis. The embodiment of the present invention realizes call-level voice packet capture and voice quality analysis in an IP network, and can realize voice stream analysis based on some related information of the call, including the specified features of the call and the bearer information of the call, instead of Network-level speech analysis in the state of the art.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.

Claims (12)

1. A voice quality analysis method, characterized in that the method comprises: Obtaining bearer information of the call to be analyzed, the call to be analyzed has specified characteristics, and the bearer information includes information related to bearer control of the call to be analyzed; Obtain the voice data packet of the call to be analyzed according to the bearer information; Perform voice quality analysis on the voice data packet; Wherein, obtaining the voice data packet of the call to be analyzed according to the bearer information includes: sending mirror information to an IP bearer device according to the bearer information, and the mirror information includes the source IP address and port number of the voice data packet and the destination IP address of the mirrored data; receiving the mirrored data of the voice data packet returned by the IP bearer device according to the mirrored information; Performing voice quality analysis on the voice data packet includes: performing voice quality analysis on the image data. 2. The method according to claim 1, wherein obtaining the bearer information comprises: Perform feature analysis on all calls in the call establishment process, determine the call with the specified feature, and obtain the bearer information of the call; Or, provide the specified feature to the media gateway controller; receive the bearer information of the call with the specified feature returned by the media gateway controller. 3. The method according to claim 1, wherein sending the image information to the IP bearer device comprises: The image information is sent to the IP bearer device through the extended media gateway control signaling. 4. The method according to claim 1, wherein obtaining the bearer information comprises: Obtaining bearer information of the calling and called sides of the call to be analyzed; Obtaining the voice data packet of the call to be analyzed according to the bearer information, including: Perform media negotiation between the calling side and the called side of the call to be analyzed according to the bearer information of the calling side and the called side of the call to be analyzed; and receiving voice data packets sent from the calling side and the called side of the call to be analyzed. 5. The method according to claim 4, wherein, according to the bearer information of the caller and called party of the call to be analyzed, performing media negotiation on the caller and called party of the call to be analyzed comprises: Select the local bearer information to form virtual calling side bearer information, replace the original calling side bearer information, and perform media negotiation with the called side; The local bearer information is selected to form virtual called-side bearer information, which replaces the original called-side bearer information, and performs media negotiation with the calling side. 6. The method according to claim 4, further comprising: Send a copy of the received voice data packet to the call peer. 7. A voice quality analysis device, characterized in that the device comprises: A first obtaining module, configured to obtain bearer information of the call to be analyzed, the call to be analyzed has specified characteristics, and the bearer information includes information related to bearer control of the call to be analyzed; A second obtaining module, configured to obtain the voice data packet of the call to be analyzed according to the bearer information; An analysis module, configured to analyze the voice quality of the voice data packets; Wherein, the second obtaining module includes: a sending unit, configured to send mirror information to the IP bearer device according to the bearer information, and the mirror information includes the source IP address, port number and destination of the mirror data of the voice data packet IP address; a first receiving unit, configured to receive the mirror data of the voice data packet returned by the IP bearer device according to the mirror information; The analyzing module is specifically used for: analyzing the voice quality of the image data. 8. The device according to claim 7, wherein the first obtaining module is specifically used for: Perform feature analysis on all calls in the call establishment process, determine the call with the specified feature, and obtain the bearer information of the call; Or, provide the specified feature to the media gateway controller; receive the bearer information of the call with the specified feature returned by the media gateway controller. 9. The device according to claim 7, wherein the sending unit is specifically used for: The mirroring information is sent to the IP bearer device by extending the media gateway control signaling. 10. The device according to claim 7, wherein the first obtaining module is specifically configured to: obtain the bearer information of the calling and called sides of the call to be analyzed; The second obtaining module includes: A negotiating unit, configured to perform media negotiation on the calling and called sides of the call to be analyzed according to the bearer information of the calling and called sides of the call to be analyzed; The second receiving unit is configured to receive the voice data packet sent from the caller and called side of the call to be analyzed. 11. The device according to claim 10, wherein the negotiation unit is specifically configured to: Select the local bearer information to form virtual calling side bearer information, replace the original calling side bearer information, and perform media negotiation with the called side; The local bearer information is selected to form virtual called-side bearer information, which replaces the original called-side bearer information, and performs media negotiation with the calling side. 12. The apparatus of claim 10, further comprising: The sending module is configured to, after the second receiving unit receives the voice data packet sent by the caller and called side of the call to be analyzed, send a copy of the received voice data packet to the opposite end of the call.

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